﻿Public Class Form1
    Dim equation As String

    Private Sub FcihierToolStripMenuItem_Click(sender As System.Object, e As System.EventArgs) Handles FcihierToolStripMenuItem.Click

    End Sub

    Private Sub SplitContainer2_Panel2_Paint(sender As System.Object, e As System.Windows.Forms.PaintEventArgs) Handles SplitContainer2.Panel2.Paint

    End Sub

    Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
        equation = TextBox1.Text
        If TextBox1.Text = "" Then
            MsgBox("Le champ de saisi est vide", MsgBoxStyle.Critical)
        End If
        Call check_content_textbox()
    End Sub

    Public Sub check_content_textbox()
        TextBox1.SelectionStart = 1

    End Sub
End Class
